Solutions for common problems in JavaScript, Node.js, React, AWS, and other libraries, complete with code examples and explanations.
Guides:
- ReferenceError: function is not defined
- TypeError: Assignment to constant variable
- SyntaxError: identifier has already been declared
- TypeError: Cannot read properties of undefined
- CORS: No 'Access-Control-Allow-Origin' header is present on the requested resource
- SyntaxError: await is only valid in async functions and the top level bodies of modules
- AWS: ResourceNotFoundError
- Next.js error: getStaticPaths was added without a getStaticProps